Hi,

AttributeError: 'NoneType' object has no attribute 'twophase'


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                        "Session already has a Connection associated for the "
                        "given Connection's Engine")
            else:
                conn = bind.contextual_connect()

        if self.session.twophase and self._parent is None:

            transaction = conn.begin_twophase()
        elif self.nested:
            transaction = conn.begin_nested()
        else:


Anybody understand this error ?

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